/**
 * Given an array of citations (each citation is a non-negative integer) of a researcher, 
 * write a function to compute the researcher's h-index.
 * According to the definition of h-index on Wikipedia: "A scientist has index h if h 
 * of his/her N papers have at least h citations each, and the other N − h papers have no 
 * more than h citations each."For example, given citations = [3, 0, 6, 1, 5], which means the 
 * researcher has 5 papers in total and each of them had received 3, 0, 6, 1, 5 citations respectively. 
 * Since the researcher has 3 papers with at least 3 citations each and the remaining two with no more 
 * than 3 citations each, his h-index is 3.
 * Note: If there are several possible values for h, the maximum one is taken as the h-index.
 */
/**
 * @author I321035
 *
 */
package problem274_H_Index;